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Fair Value Disclosures - Fair Value Option (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Fair Value Disclosures    
Loans Receivable, Fair Value Disclosure $ 16 $ 18
Loans Held for Sale, Fair Value 1,645 1,065
UPB 1,645 1,056
Difference 0 9
Trading loans    
Fair Value Disclosures    
Trading Loans, Fair Value 1,701 1,960
UPB 1,819 2,101
Difference (118) (141)
Loans and leases    
Fair Value Disclosures    
Loans Receivable, Fair Value Disclosure 16 18
UPB 18 20
Difference $ (2) $ (2)